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feat(compiler): integrate compiler with view engine - hello world
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| # Compiler Integration for new View Engine | ||
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| This folder contains the code to integrate the compiler with the new view engine. | ||
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| Note: This is work in progress, and once complete will replace the regular view_compiler folder. |
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modules/@angular/compiler/src/view_compiler_next/view_compiler.ts
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| /** | ||
| * @license | ||
| * Copyright Google Inc. All Rights Reserved. | ||
| * | ||
| * Use of this source code is governed by an MIT-style license that can be | ||
| * found in the LICENSE file at https://angular.io/license | ||
| */ | ||
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| import {AnimationEntryCompileResult} from '../animation/animation_compiler'; | ||
| import {CompileDirectiveMetadata, CompilePipeSummary, identifierModuleUrl, identifierName} from '../compile_metadata'; | ||
| import {convertPropertyBinding} from '../compiler_util/expression_converter'; | ||
| import {CompilerConfig} from '../config'; | ||
| import {ASTWithSource, Interpolation} from '../expression_parser/ast'; | ||
| import {Identifiers, createIdentifier} from '../identifiers'; | ||
| import {CompilerInjectable} from '../injectable'; | ||
| import * as o from '../output/output_ast'; | ||
| import {viewEngine} from '../private_import_core'; | ||
| import {ElementSchemaRegistry} from '../schema/element_schema_registry'; | ||
| import {AttrAst, BoundDirectivePropertyAst, BoundElementPropertyAst, BoundEventAst, BoundTextAst, DirectiveAst, ElementAst, EmbeddedTemplateAst, NgContentAst, ReferenceAst, TemplateAst, TemplateAstVisitor, TextAst, VariableAst, templateVisitAll} from '../template_parser/template_ast'; | ||
| import {ViewEncapsulationEnum} from '../view_compiler/constants'; | ||
| import {ComponentFactoryDependency, ComponentViewDependency, DirectiveWrapperDependency, ViewCompileResult, ViewCompiler} from '../view_compiler/view_compiler'; | ||
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| @CompilerInjectable() | ||
| export class ViewCompilerNext extends ViewCompiler { | ||
| constructor( | ||
| private _genConfigNext: CompilerConfig, private _schemaRegistryNext: ElementSchemaRegistry) { | ||
| super(_genConfigNext, _schemaRegistryNext); | ||
| } | ||
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| compileComponent( | ||
| component: CompileDirectiveMetadata, template: TemplateAst[], styles: o.Expression, | ||
| pipes: CompilePipeSummary[], | ||
| compiledAnimations: AnimationEntryCompileResult[]): ViewCompileResult { | ||
| const visitor = new ViewBuilderVisitor(); | ||
| templateVisitAll(visitor, template); | ||
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| const statements: o.Statement[] = []; | ||
| const compName = identifierName(component.type) + (component.isHost ? `_Host` : ''); | ||
| const viewName = `view_${compName}`; | ||
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| const renderCompTypeName = `renderType_${compName}`; | ||
| statements.push( | ||
| createRenderComponentType(renderCompTypeName, component, styles, compiledAnimations)); | ||
| const renderCompType = o.variable(renderCompTypeName); | ||
| statements.push(...visitor.build(viewName, o.importType(component.type), renderCompType)); | ||
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| return new ViewCompileResult(statements, viewName, []); | ||
| } | ||
| } | ||
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| function createRenderComponentType( | ||
| renderCompTypeName: string, component: CompileDirectiveMetadata, styles: o.Expression, | ||
| animations: AnimationEntryCompileResult[]): o.Statement { | ||
| const compName = identifierName(component.type); | ||
| const compFilePath = identifierModuleUrl(component.type); | ||
| const renderCompTypeVar: o.ReadVarExpr = o.variable(renderCompTypeName); | ||
| return renderCompTypeVar | ||
| .set(o.importExpr(createIdentifier(Identifiers.createRenderComponentType)).callFn([ | ||
| o.literal(''), | ||
| o.literal(component.template.ngContentSelectors.length), | ||
| ViewEncapsulationEnum.fromValue(component.template.encapsulation), | ||
| styles, | ||
| o.literalMap( | ||
| animations.map((entry): [string, o.Expression] => [entry.name, entry.fnExp]), null, | ||
| true), | ||
| ])) | ||
| .toDeclStmt(o.importType(createIdentifier(Identifiers.RenderComponentType))); | ||
| } | ||
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| const VIEW_VAR = o.variable('view'); | ||
| const COMP_VAR = o.variable('comp'); | ||
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| class ViewBuilderVisitor implements TemplateAstVisitor { | ||
| private nodeDefs: o.Expression[] = []; | ||
| private updateStmts: o.Statement[] = []; | ||
| private bindingCount = 0; | ||
| private nodeCount = 0; | ||
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| build(viewName: string, compType: o.Type, renderCompType: o.Expression): o.Statement[] { | ||
| const viewFlags = 0; | ||
| let updateFn: o.Expression; | ||
| if (this.updateStmts.length > 0) { | ||
| updateFn = o.fn( | ||
| [new o.FnParam(VIEW_VAR.name)], | ||
| [COMP_VAR.set(VIEW_VAR.prop('component')).toDeclStmt(compType), ...this.updateStmts]); | ||
| } else { | ||
| updateFn = o.NULL_EXPR; | ||
| } | ||
| const handleEventFn = o.NULL_EXPR; | ||
| const viewFactory = new o.DeclareFunctionStmt( | ||
| viewName, [], | ||
| [new o.ReturnStatement(o.importExpr(createIdentifier(Identifiers.viewDef)).callFn([ | ||
| o.literal(viewFlags), o.literalArr(this.nodeDefs.slice().reverse()), updateFn, | ||
| handleEventFn, renderCompType | ||
| ]))]); | ||
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| return [viewFactory]; | ||
| } | ||
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| visitNgContent(ast: NgContentAst, context: any): any {} | ||
| visitEmbeddedTemplate(ast: EmbeddedTemplateAst, context: any): any {} | ||
| visitElement(ast: ElementAst, context: any): any { | ||
| // elementDef( | ||
| // flags: NodeFlags, matchedQueries: [string, QueryValueType][], ngContentIndex: number, | ||
| // childCount: number, name: string, fixedAttrs: {[name: string]: string} = {}, | ||
| // bindings?: | ||
| // ([BindingType.ElementClass, string] | [BindingType.ElementStyle, string, string] | | ||
| // [BindingType.ElementAttribute | BindingType.ElementProperty, string, | ||
| // SecurityContext])[], | ||
| // outputs?: (string | [string, string])[]): NodeDef; | ||
| const nodeIndex = this.nodeCount++; | ||
| templateVisitAll(this, ast.directives); | ||
| templateVisitAll(this, ast.children); | ||
| const childCount = this.nodeCount - nodeIndex - 1; | ||
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| const flags = o.literal(0); | ||
| const fixedAttrs = o.literalMap([]); | ||
| this.nodeDefs.push(o.importExpr(createIdentifier(Identifiers.elementDef)).callFn([ | ||
| flags, o.NULL_EXPR, o.NULL_EXPR, o.literal(childCount), o.literal(ast.name), fixedAttrs | ||
| ])); | ||
| } | ||
| visitReference(ast: ReferenceAst, context: any): any {} | ||
| visitVariable(ast: VariableAst, context: any): any {} | ||
| visitEvent(ast: BoundEventAst, context: any): any {} | ||
| visitElementProperty(ast: BoundElementPropertyAst, context: any): any {} | ||
| visitAttr(ast: AttrAst, context: any): any {} | ||
| visitBoundText(ast: BoundTextAst, context: any): any { | ||
| const nodeIndex = this.nodeCount++; | ||
| const astWithSource = <ASTWithSource>ast.value; | ||
| const inter = <Interpolation>astWithSource.ast; | ||
| this.updateStmts.push(o.importExpr(createIdentifier(Identifiers.setCurrentNode)) | ||
| .callFn([o.variable('view'), o.literal(nodeIndex)]) | ||
| .toStmt()); | ||
| const exprs = inter.expressions.map((expr) => { | ||
| const bindingId = `bind_${this.bindingCount++}`; | ||
| const converted = convertPropertyBinding(null, null, COMP_VAR, expr, bindingId); | ||
| this.updateStmts.push(...converted.stmts); | ||
| return converted.currValExpr; | ||
| }); | ||
| if (exprs.length > 10) { | ||
| this.updateStmts.push(o.importExpr(createIdentifier(Identifiers.checkNodeDynamic)) | ||
| .callFn([o.literalArr(exprs)]) | ||
| .toStmt()); | ||
| } else { | ||
| this.updateStmts.push( | ||
| o.importExpr(createIdentifier(Identifiers.checkNodeInline)).callFn(exprs).toStmt()); | ||
| } | ||
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| // textDef(ngContentIndex: number, constants: string[]): NodeDef; | ||
| this.nodeDefs.push(o.importExpr(createIdentifier(Identifiers.textDef)).callFn([ | ||
| o.NULL_EXPR, o.literalArr(inter.strings.map(s => o.literal(s))) | ||
| ])); | ||
| } | ||
| visitText(ast: TextAst, context: any): any { | ||
| this.nodeCount++; | ||
| // textDef(ngContentIndex: number, constants: string[]): NodeDef; | ||
| this.nodeDefs.push(o.importExpr(createIdentifier(Identifiers.textDef)).callFn([ | ||
| o.NULL_EXPR, o.literalArr([o.literal(ast.value)]) | ||
| ])); | ||
| } | ||
| visitDirective(ast: DirectiveAst, context: any): any { | ||
| this.nodeCount++; | ||
| const flags = 0; | ||
| const childCount = 0; | ||
| const deps: o.Expression[] = []; | ||
| let compView = o.NULL_EXPR; | ||
| if (ast.directive.isComponent) { | ||
| compView = o.importExpr({reference: ast.directive.componentViewType}); | ||
| } | ||
| // directiveDef( | ||
| // flags: NodeFlags, matchedQueries: [string, QueryValueType][], childCount: number, ctor: | ||
| // any, | ||
| // deps: ([DepFlags, any] | any)[], props?: {[name: string]: [number, string]}, | ||
| // outputs?: {[name: string]: string}, component?: () => ViewDefinition): NodeDef; | ||
| this.nodeDefs.push(o.importExpr(createIdentifier(Identifiers.directiveDef)).callFn([ | ||
| o.literal(flags), o.NULL_EXPR, o.literal(childCount), o.importExpr(ast.directive.type), | ||
| o.literalArr(deps), o.NULL_EXPR, o.NULL_EXPR, compView | ||
| ])); | ||
| } | ||
| visitDirectiveProperty(ast: BoundDirectivePropertyAst, context: any): any {} | ||
| } |
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